To Hannah, the world ended when her sister Melanie died. Both had always had supernatural powers — the ability to float into the sky, shake the earth and spin the clouds into monsoons and thunderstorms. They were also able to manipulate time and probability, but never in a way that allowed them to control the outcome. Melanie died at the hands of drunken college boys — or in self-immolation due to their transphobic parents' abuse, or in a flooded river, or by drowning in a swimming pool — because every time Melanie dies, Hannah splits the timeline in an attempt to prevent it, and fails every time. What's worse, each attempt comes with uncontrollable side effects: catastrophic weather events, fires, and at one point a whirlwind of plates, mugs and shards of glass that injures everyone in the theatre where Hannah performs.

Appearing as a ghost, Melanie tries to stop Hannah from hurting others and herself with these continued attempts to save her. But Hannah is grieving, and turns to pills, cutting, and creating apocalyptic weather. Her attempts to kill herself are as doomed as her attempts to prevent her sister's death. Hannah remembers how it felt to grow up with Melanie, both of them youthful and joyous. While laying on the floor of her apartment, she becomes weary from the chaotic weather her emotions cause, and knows she has missed the flight back to her parents' house this time around. She contemplates giving up, but instead picks up her phone and tries, once again, to reach her sister.